2009 RENAULT TWINGO ESP

62B-36
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
MAIN SCREEN
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine stopped with ignition on (12 V APC), AIR
CONDITIONING OFF (air conditioning compressor not activated).
Note:
This page lists the statuses and parameters provided by the climate control computer
but which are not associated with the three sub-functions given in the conformity
check (PASSENGER COMPARTMENT VENTILATION, COLD LOOP and HEATING
sub-functions).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Electrical suppliesPR092:Battery voltage10.5 V < X <14.4 VIn the event of a fault, see the
interpretation of this
parameter.
ET083:+ 12 V after
ignition present ABSENT: Ignition off.
PRESENT: Ignition on.In the event of a fault, refer to the
interpretation of this status.
ET002:+ 12 V side
lightsABSENT: Side lights off.
PRESENT: Side lights
on.In the event of a fault, refer to the
interpretation of this status.
PR122:Night lighting
level15 % = minimum
lighting level
99 % = maximum
lighting level
(side lights
off: 102 %)In the event of a fault, refer to the
interpretation of this status.
Note:
This parameter is displayed via
the climate control computer but
is generated by the instrument
panel.

62B-37
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
SUB-FUNCTION: PASSENGER COMPARTMENT VENTILATION
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, AIR CONDITIONING ON (air conditioning
compressor activated).
Note:
–Read the parameters when the vehicle is cold (in the morning) to check the
conformity of the temperature parameters (without thermometer). The two
temperatures should be practically the same (as should the coolant temperature
given by the injection system).
–The invalid values given in this check correspond to the value sent by the diagnostic
tool (substitute value) when the sensor in question is faulty. A sensor fault can be
detected when these invalid values are displayed (this is an important point for
sensors on which fault finding cannot be performed, e.g. exterior temperature
sensor).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
Passenger
compartment
blowerPR019: Passenger
compartment
fan PWM settingSpeed 0 = 0 %
Speed 8 = 100 %
Note:
The PWM signal is a
modulated control
voltage used to control
the air conditioning
blower power module.If there is a fault or for more
information (to find the
intermediate speed
percentages), refer to the
interpretation of this
parameter.
Note:
If the parameter varies correctly,
but the passenger compartment
blower unit is not working: refer to
fault finding chart no. 5.
ET141: Passenger
compartment
blowerRUNNING
or
STOPPED
After a user request.In the event of a fault, refer to the
interpretation of this status.
Air flapsPR012: Mixing flap
positionFrom 0 % (“Maximum
cold” position: 15 ˚C)
to 100 % (“Maximum
hot” position: 27 ˚C).In the event of a fault, see the
interpretation of this
parameter.
ET062: Recirculation
flap positionOPEN if the flap is in the
external air position.
CLOSED if the flap is in
the recirculation
position.In the event of a fault, refer to the
interpretation of this status.
PR011: Distribution flap
positionFrom 0 % (Air vent
position)
to 100 % (De-icing
position).In the event of a fault, refer to the
interpretation of this status.

62B-38
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
SUB-FUNCTION: PASSENGER COMPARTMENT VENTILATION (CONTINUED)
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, (12 V APC) AIR CONDITIONING ON
(air conditioning compressor activated).
FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
TemperaturesPR001:Interior
temperatureX = interior
temperature ± 5 ˚C
(invalid value: 87.5 ˚C)In the event of a fault, see the
interpretation of this
parameter.
PR002:External
temperatureX = exterior
temperature ± 5 ˚C
(invalid value: 215 ˚C)In the event of a fault, see the
interpretation of this
parameter.
Note:
This parameter is displayed via
the climate control computer but
is generated by the UCH.

62B-41
MR-413-X44-62B000$460_eng.mif
V1

Vdiag No.: 44CLIMATE CONTROL
Fault finding - Conformity check62B
MAIN SCREEN
NOTESOnly carry out this conformity check after a full check using the diagnostic tool
(fault reading and configuration checks).
Application conditions: engine running, AIR CONDITIONING ON (air conditioning
compressor activated).
This page lists the statuses and parameters provided by the climate control computer
but which are not associated with the three sub-functions given in the conformity
check (PASSENGER COMPARTMENT VENTILATION, COLD LOOP and HEATING
sub-functions).
Order FunctionParameter or Status
checked or ActionDisplay and Notes Fault finding
1Electrical
suppliesPR092:Battery voltage10.5 V < X <14.4 VIn the event of a fault, see
the interpretation of this
parameter.
ET083:+ 12 V after
ignition present PRESENT:
Ignition on.In the event of a fault, refer
to the interpretation of this
status.
ET002:+ 12 V side
lightsABSENT: Side lights off.
PRESENT: Side lights
on.In the event of a fault, refer
to the interpretation of this
status.
PR122:Night lighting
levelBetween 15 % (minimum
lighting level) and 99 %
(maximum lighting level)
(side lights off: 102 %)In the event of a fault,
consult the interpretation
of this parameter
Note:
This parameter is displayed
by the climate control
computer but is generated
by the instrument panel.

62B-47
MR-413-X44-62B000$552_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of statuses

Vdiag No.: 44
62B
ET085
HEATED REAR SCREEN: AUTO MODE
NOTESNone
This status specifies whether the heated rear screen is operated in automatic mode or not. This mode
corresponds to the SEE CLEAR function. This function switches on the heated rear screen, the heated door
mirrors, the air conditioning and the windscreen ventilation. The heating and air conditioning system requires a
short amount of time between the request and blower activation in order for dry air to be blown. The heated rear
screen will operate for as long as the SEE CLEAR function is requested (permanently controlled). This automatic
mode is obtained by pressing the de-icing button at the top of the air conditioning control panel.
If the SEE CLEAR function is requested, the status should display ACTIVE.
If the SEE CLEAR function is not requested, the status should display INACTIVE.
If the status does not operate as indicated (see ALP10 Poor de-icing efficiency - rear screen demisting).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_ET085

62B-48
MR-413-X44-62B000$552_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of statuses

Vdiag No.: 44
62B
ET086
HEATED REAR SCREEN: MANUAL MODE
NOTESNone
This status specifies whether the request for the heated rear screen is being operated in manual mode. This mode
corresponds to a timed operating period for the heated rear screen, controlled by the UCH. This time delay
depends on the exterior temperature (between 10 and 15 minutes).
Operation in manual mode is obtained by pressing the de-icing button at the bottom of the air conditioning control
panel. This function is used to switch on the heated rear screen and the heated door mirrors.
If activation of the heated rear screen is requested in manual mode, the status should display ACTIVE.
If activation of the heated rear screen is not requested, the status should display: INACTIVE.
If the status does not operate as indicated (see ALP10 Poor de-icing efficiency - rear screen demisting).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_ET086

62B-59
MR-413-X44-62B000$644_eng.mif
V1
CLIMATE CONTROL
Fault finding - Interpretation of parameters
Vdiag No.: 44
62B
PR092
BATTERY VOLTAGE
NOTESUse the Wiring Diagram Technical Note for the New Twingo.
This parameter specifies the supply voltage of the climate control computer.
This parameter must display a voltage equal to: 10.5 V < X < 14.4 V with the engine running.
Using a multimeter, check the consistency of the parameter by measuring the voltage across the battery
terminals.
If the parameter corresponds with the voltage measured on the battery terminals, run fault finding on the electric
charging circuit.
If the parameter does not correspond with the battery voltage, check the condition and position of fuse F29 (15A)
in the passenger compartment fuse unit.
Consult section 81C Fuses.
Disconnect the connectors of the following components of connection SP2:
●Component connector 615
●Component connector 419
●Component connector 645
●Component connector 319
●Component connector 261
●Component connector 653
●Component connector 1428
With connector A of component 419 disconnected, check the insulation and continuity of connection SP2
between components 419 and 1016.
If the connection or connections are faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring:
Precautions for repair), repair the wiring, otherwise replace it.
Check the vehicle earth connection NAM of the connector of component 419.
If the connection is faulty (see Technical Note 6015A, Repairing electrical wiring, Wiring: Precautions for the
repair), repair the wiring, otherwise replace the wiring.
If these checks do not reveal any faults, carry out a test on each of the components involved in connection
SP2 (short circuit).
AFTER REPAIRRepeat the conformity check from the start.
CLIM_V44_PR092

62B-89
MR-413-X44-62B000$920_eng.mif
V1
62B
CLIMATE CONTROL
Diagnostic - Fault finding chart
ALP 10 Inefficient rear screen de-icing/demisting
NOTESCarry out this conformity check after a full check using the diagnostic tool
(fault reading, especially UCH and injection faults and configuration checks).
Check that the fuses are sound.
Use a multimeter and a 21 W test light.
Use the Wiring Diagram Technical Note, NEW TWINGO.
Special notes:
Check that the inside of the windows are not greasy as this reduces the efficiency of
the de-icing.
Note:
The de-icing control is only authorised when the engine is running to save power.
The rear screen de-icer control is activated by pressing the de-icing button at the
bottom of the climate control panel in manual mode (with time delay and rear-view
mirror de-icer).
Ensure that there are no water leaks in the passenger compartment which would significantly increase the
moisture and reduce the effectiveness of the demisting function (see ALP 12 if the fault is noted).
Is the fault still present?
YES NO
Check that the UCH is correctly configured by viewing the configuration reading LC013 Type of air conditioning.
Reconfigure the UCH if necessary.
Check that the UCH receives the signal about the
status and operation of the engine. In the Cold Loop
screen, status ET142 "engine operating phase"
should display RUNNING.
Is status ET142 RUNNING?
YES
End of fault finding procedure.
NOCarry out fault finding on the UCH
(interpretation of status ET142) and on the
multiplex network.
AFTER REPAIRCarry out a complete check with the diagnostic tool.

Vdiag No.: 44
MR-413-X44-62B000$920_eng.mif